这是哪三种线材？

北方铁匠

5000 tons of high carbon wire rod for prestressing wire drawing

1000 MT of Steel Wool Wire

900 tons of low relaxation 6mm chevron indented PC wire grade CP175 produced acc. to NBR 7482

请问以上是哪三种线材？

草原的风

水平有限，仅供参考。
5000 tons of high carbon wire rod for prestressing wire drawing
预应力高碳钢丝棒
1000 MT of Steel Wool Wire
钢丝刷用钢丝
900 tons of low relaxation 6mm chevron indented  PCwire grade CP175 produced acc. to NBR 7482
波浪锯齿状钢绞线（钢丝绳）用钢丝。